メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.778339559292 35.4496297645992, 136.778291858459 35.4493747938503, 136.778221034588 35.4490874251818, 136.779120848754 35.4489893243916, 136.779115425255 35.4489356122213, 136.77939808614 35.4489165866294, 136.779403303019 35.448968397116, 136.78002380562 35.4489083035316, 136.780030232415 35.4493376811404, 136.779723258041 35.449365715495, 136.779736040806 35.4494822320484, 136.778339559292 35.4496297645992)) ^^http://www.opengis.net/ont/geosparql#wktLiteral